I really, really wish Squarespace would address this limitation, it makes no sense to me. My site is built with Blog pages and this 20 post limit has really become a hinderance for me.Â
Thanks for the advice above Ziggy — the pagination plugin is a decent compromise — $10 for the plugin is reasonable, but then I went in to inject the code and it turns out I need to upgrade my account in order to have that ability. So now it'll cost me almost $100 to add pagination which I wouldn't even need if Squarespace would just make this adjustment.
SOMEONE AT SQUARESPACE PLEASE MAKE THIS HAPPEN! 🙂